#! /bin/bash
#
# network       Bring up/down networking
#
# chkconfig: 2345 10 90
# description: Activates/Deactivates all network interfaces configured to \
#              start at boot time.
#
### BEGIN INIT INFO
# Provides: $network
# Should-Start: iptables ip6tables
# Short-Description: Bring up/down networking
# Description: Bring up/down networking
### END INIT INFO

# Source function library.
. /etc/init.d/functions

if [ ! -f /etc/sysconfig/network ]; then
    exit 6
fi

. /etc/sysconfig/network

if [ -f /etc/sysconfig/pcmcia ]; then
    . /etc/sysconfig/pcmcia
fi


# Check that networking is up.
[ "${NETWORKING}" = "no" ] && exit 6

# if the ip configuration utility isn't around we can't function.
[ -x /sbin/ip ] || exit 1

CWD=$(pwd)
cd /etc/sysconfig/network-scripts

. ./network-functions

# find all the interfaces besides loopback.
# ignore aliases, alternative configurations, and editor backup files
interfaces=$(ls ifcfg* | \
        LANG=C sed -e "$__sed_discard_ignored_files" \
               -e '/\(ifcfg-lo$\|:\|ifcfg-.*-range\)/d' \
               -e '/ifcfg-[A-Za-z0-9#\._-]\+$/ { s/^ifcfg-//g;s/[0-9]/ &/}' | \
        LANG=C sort -k 1,1 -k 2n | \
        LANG=C sed 's/ //')
rc=0

# See how we were called.
case "$1" in
  start)
    [ "$EUID" != "0" ] && exit 4
    rc=0
    # IPv6 hook (pre IPv4 start)
    if [ -x /etc/sysconfig/network-scripts/init.ipv6-global ]; then
        /etc/sysconfig/network-scripts/init.ipv6-global start pre
    fi
  
    apply_sysctl

    # bring up loopback interface
    action $"Bringing up loopback interface: " ./ifup ifcfg-lo

    case "$VLAN" in
      yes)
        if [ ! -d /proc/net/vlan ] && ! modprobe 8021q >/dev/null 2>&1 ; then
        net_log $"No 802.1Q VLAN support available in kernel."
        fi
        ;;
    esac

    vlaninterfaces=""
    xdslinterfaces=""
    bridgeinterfaces=""

    # bring up all other interfaces configured to come up at boot time
    for i in $interfaces; do
        unset DEVICE TYPE SLAVE
        eval $(LANG=C fgrep "DEVICE=" ifcfg-$i)
        eval $(LANG=C fgrep "TYPE=" ifcfg-$i)
        eval $(LANG=C fgrep "SLAVE=" ifcfg-$i)

        if [ -z "$DEVICE" ] ; then DEVICE="$i"; fi

        if [ "$SLAVE" = "yes" ]; then
            continue
        fi

        if [ "$TYPE" = "xDSL" ]; then
                xdslinterfaces="$xdslinterfaces $i"
            continue
        fi

        if [ "$TYPE" = "Bridge" ]; then
                bridgeinterfaces="$bridgeinterfaces $i"
            continue
        fi

        if [ "${DEVICE%%.*}" != "$DEVICE"  -o  "${DEVICE##vlan}" != "$DEVICE" ] ; then
            vlaninterfaces="$vlaninterfaces $i"
            continue
        fi
        
        if LANG=C egrep -L "^ONBOOT=['\"]?[Nn][Oo]['\"]?" ifcfg-$i > /dev/null ; then
                # this loads the module, to preserve ordering
            is_available $i
            continue
        fi
        # If we're in confirmation mode, get user confirmation.
        if [ -f /var/run/confirm ]; then
            confirm $i
            test $? = 1 && continue
        fi
        action $"Bringing up interface $i: " ./ifup $i boot
        [ $? -ne 0 ] && rc=1
    done
    
    # Bring up xDSL and VPN interfaces
    for i in $vlaninterfaces $bridgeinterfaces $xdslinterfaces ; do
            if ! LANG=C egrep -L "^ONBOOT=['\"]?[Nn][Oo]['\"]?" ifcfg-$i >/dev/null 2>&1 ; then
        # If we're in confirmation mode, get user confirmation.
        if [ -f /var/run/confirm ]; then
            confirm $i
            test $? = 1 && continue
        fi
        action $"Bringing up interface $i: " ./ifup $i boot
        [ $? -ne 0 ] && rc=1
        fi
        done

    # Add non interface-specific static-routes.
    if [ -f /etc/sysconfig/static-routes ]; then
       grep "^any" /etc/sysconfig/static-routes | while read ignore args ; do
              /sbin/route add -$args
       done
    fi    
    # Add non interface-specific static arp entries.
    if [ -f /etc/ethers ]; then
        /sbin/arp -f /etc/ethers
    fi

     # IPv6 hook (post IPv4 start)
     if [ -x /etc/sysconfig/network-scripts/init.ipv6-global ]; then
         /etc/sysconfig/network-scripts/init.ipv6-global start post
     fi
    # Run this again to catch any interface-specific actions
    apply_sysctl
 
        touch /var/lock/subsys/network

    [ -n "${NETWORKDELAY}" ] && /bin/sleep ${NETWORKDELAY}
        ;;
  stop)
    [ "$EUID" != "0" ] && exit 4
      # Don't shut the network down if root is on NFS or a network
    # block device.
        rootfs=$(awk '{ if ($1 !~ /^[ \t]*#/ && $2 == "/" && $3 != "rootfs") { print $3; }}' /proc/mounts)
        rootopts=$(awk '{ if ($1 !~ /^[ \t]*#/ && $2 == "/") { print $4; }}' /etc/mtab)
    
    if [[ "$rootfs" == nfs* || "$rootopts" =~ _r?netdev ]] ; then
        exit 1
    fi
  
      # If this is a final shutdown/halt, check for network FS,
    # and unmount them even if the user didn't turn on netfs
    if [ "$RUNLEVEL" = "6" -o "$RUNLEVEL" = "0" -o "$RUNLEVEL" = "1" ]; then
        NETMOUNTS=$(findmnt -m -t nfs,nfs4,smbfs,ncpfs,cifs 2>/dev/null)
        if [ -n "$NETMOUNTS" ] ; then
            /etc/init.d/netfs stop
        fi
    fi
    
    vlaninterfaces=""
    xdslinterfaces=""
    bridgeinterfaces=""
    remaining=""
    rc=0

    # get list of bonding, vpn, and xdsl interfaces
    for i in $interfaces; do
        unset DEVICE TYPE
        eval $(LANG=C fgrep "DEVICE=" ifcfg-$i)
        eval $(LANG=C fgrep "TYPE=" ifcfg-$i)

        if [ -z "$DEVICE" ] ; then DEVICE="$i"; fi

        if [ "$TYPE" = "Bridge" ]; then
                bridgeinterfaces="$bridgeinterfaces $i"
                continue
        fi
        if [ "$TYPE" = "xDSL" ]; then
                xdslinterfaces="$xdslinterfaces $i"
            continue
        fi

        if [ "${DEVICE%%.*}" != "$DEVICE"  -o  "${DEVICE##vlan}" != "$DEVICE" ] ; then
            vlaninterfaces="$vlaninterfaces $i"
            continue
        fi
        remaining="$remaining $i"
    done
    
    for i in $xdslinterfaces $bridgeinterfaces $vlaninterfaces $remaining; do
        (. ./ifcfg-$i
        if [ -z "$DEVICE" ] ; then DEVICE="$i"; fi

        if ! check_device_down $DEVICE; then
           action $"Shutting down interface $i: " ./ifdown $i boot
           [ $? -ne 0 ] && rc=1
        fi
        )
    done

    action $"Shutting down loopback interface: " ./ifdown ifcfg-lo

    sysctl -w net.ipv4.ip_forward=0 > /dev/null 2>&1

    # IPv6 hook (post IPv4 stop)
    if [ -x /etc/sysconfig/network-scripts/init.ipv6-global ]; then
        /etc/sysconfig/network-scripts/init.ipv6-global stop post
    fi
    
        rm -f /var/lock/subsys/network
        ;;
  status)
    echo $"Configured devices:"
    echo lo $interfaces

    echo $"Currently active devices:"
    echo $(/sbin/ip -o link show up | awk -F ": " '{ print $2 }')
    ;;
  restart|reload|force-reload)
        cd "$CWD"
    $0 stop
    $0 start
    rc=$?
    ;;
  *)
        echo $"Usage: $0 {start|stop|status|restart|reload|force-reload}"
        exit 2
esac

exit $rc
